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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 484 | * Fires when the WP_Customize_Setting::save() method is called. |
| 485 | * |
| 486 | * The dynamic portion of the hook name, `$this->id_data['base']` refers to |
| 487 | * the base slug of the setting name. |
| 488 | * |
| 489 | * @since 3.4.0 |
| 490 | * |
| 491 | * @param WP_Customize_Setting $this WP_Customize_Setting instance. |
| 492 | */ |
| 493 | do_action( 'customize_save_' . $this->id_data['base'], $this ); |
| 494 | |
| 495 | $this->update( $value ); |
| 496 | } |
| 497 | |
| 498 | /** |
| 499 | * Fetch and sanitize the $_POST value for the setting. |
| 500 | * |
| 501 | * During a save request prior to save, post_value() provides the new value while value() does not. |
| 502 | * |